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Chromosome 7, Partial Monosomy 7p

National Organization for Rare Disorders, Inc.

ImportantIt is possible that the main title of the report Chromosome 7, Partial Monosomy 7p is not the name you expected.

Disorder Subdivisions

None

General Discussion

Chromosome 7, Partial Monosomy 7p is a rare chromosomal disorder characterized by deletion (monosomy) of a portion of the short arm (p) of chromosome 7 (7p). Associated symptoms and findings may be variable and may depend on the specific size and location of the deleted segment of 7p. However, in many cases, there is early closure of the fibrous joints (cranial sutures) between certain bones of the skull (craniosynostosis), resulting in an abnormally shaped head. For example, depending on the specific sutures involved, the forehead may appear unusually "triangular shaped" (trigonocephaly) or the head may seem abnormally long and narrow with the top pointed or conical (turricephaly). Affected infants and children may also have additional malformations of the skull and facial (craniofacial) region. Such abnormalities may include an unusually small head (microcephaly), closely or widely set eyes (ocular hypotelorism or hypertelorism), downslanting eyelid folds (palpebral fissures), and/or other findings.

Partial Monosomy 7p may also be characterized by additional physical features, such as growth deficiency, musculoskeletal abnormalities, genital defects, structural malformations of the heart that are present at birth (congenital heart defects), and/or other abnormalities. In addition, some affected individuals may have varying degrees of mental retardation and delays in the acquisition of skills requiring the coordination of mental and motor activities (psychomotor delays). Normal intelligence has also been reported.

In most cases, Chromosome 7, Partial Monosomy 7p appears to result from spontaneous (de novo) errors very early in embryonic development that occur for unknown reasons.

Supporting Organizations

AmeriFace

PO Box 751112

Las Vegas, NV 89136

USA

Tel: (702)769-9264

Fax: (702)341-5351

Tel: (888)486-1209

Email: info@ameriface.org

Website: http://www.ameriface.org

American Heart Association

7272 Greenville Avenue

Dallas, TX 75231

Tel: (214)784-7212

Fax: (214)784-1307

Tel: (800)242-8721

Email: Review.personal.info@heart.org

Website: http://www.heart.org

Children's Craniofacial Association

13140 Coit Road

Suite 517

Dallas, TX 75240

USA

Tel: (214)570-9099

Fax: (214)570-8811

Tel: (800)535-3643

Email: contactCCA@ccakids.com

Website: http://www.ccakids.com

Chromosome Disorder Outreach, Inc.

P.O. Box 724

Boca Raton, FL 33429-0724

USA

Tel: (561)395-4252

Fax: (561)395-4252

Email: info@chromodisorder.org

Website: http://www.chromodisorder.org/

Craniofacial Foundation of America

975 East Third Street

Chattanooga, TN 37403

Tel: (423)778-9176

Fax: (423)778-8172

Tel: (800)418-3223

Email: terry.smyth@erlanger.org

Website: http://www.craniofacialfoundation.org/www

FACES: The National Craniofacial Association

PO Box 11082

Chattanooga, TN 37401

Tel: (423)266-1632

Fax: (423)267-3124

Tel: (800)332-2373

Email: faces@faces-cranio.org

Website: http://www.faces-cranio.org

Genetic and Rare Diseases (GARD) Information Center

PO Box 8126

Gaithersburg, MD 20898-8126

Tel: (301)251-4925

Fax: (301)251-4911

Tel: (888)205-2311

Website: http://rarediseases.info.nih.gov/GARD/

March of Dimes

1275 Mamaroneck Avenue

White Plains, NY 10605

Tel: (914)997-4488

Fax: (914)997-4763

Email: AskUs@marchofdimes.org or preguntas@nacersano.org

Website: http://www.marchofdimes.org and nacersano.org

Support Organization for Trisomy 18, 13, and Related Disorders

2982 S. Union Street

Rochester, NY 14624-1926

Fax: (585)594-1957

Tel: (800)716-7638

Email: barbv@trisomy.org

Website: http://www.trisomy.org

The Arc

1825 K Street NW, Suite 1200

Washington, DC 20006

Tel: (202)534-3700

Fax: (202)534-3731

Tel: (800)433-5255

Email: info@thearc.org

Website: http://www.thearc.org

UNIQUE - Rare Chromosome Disorder Support Group

G1 The Stables

Station Road West

Oxted, RH8 9EE

United Kingdom

Tel: 0044 (0)1883 723356

Email: info@rarechromo.org

Website: http://www.rarechromo.org/html/home.asp

For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders (NORD). For a full-text version of this report, go to www.rarediseases.org and click on Rare Disease Database under "Rare Disease Information".

The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only.

It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report.

This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.

Last Updated: 4/10/2009Copyright 2009 National Organization for Rare Disorders, Inc.

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